/*
 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
/*
 * Modified for port to ARC processor
 * by Huaqi Fang huaqi.fang@synopsys.com, Synopsys, Inc.
 */

#ifndef LWIP_ARCH_SYS_ARCH_H
#define LWIP_ARCH_SYS_ARCH_H

#include <lwip/arch.h>

/** if enabled os, use os functions */
#ifdef ENABLE_OS
#define LWIP_ENABLE_OS
#endif

#define SYS_MBOX_NULL 	NULL
#define SYS_SEM_NULL  	NULL
#define SYS_MUTEX_NULL 	NULL
#define SYS_THREAD_NULL	NULL

/**
 * \brief protect variable type
 */
typedef u32_t sys_prot_t;
#ifndef SYS_ARCH_PROTECT
#if SYS_LIGHTWEIGHT_PROT
/** arc exception provide lock save & restore */
#include "arc_exception.h"
#endif /* SYS_LIGHTWEIGHT_PROT */
#endif /* SYS_ARCH_PROTECT */

#ifdef LWIP_ENABLE_OS
#ifdef OS_FREERTOS
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "semphr.h"

typedef xSemaphoreHandle sys_sem_t;
#define sys_sem_valid(sem) 				(((sem) != NULL) && (*(sem) != NULL))
#define sys_sem_set_invalid(sem) 		do { if((sem) != NULL) { *(sem) = NULL; }}while(0)

/* let sys.h use binary semaphores for mutexes */
#define LWIP_COMPAT_MUTEX 0
#if !LWIP_COMPAT_MUTEX
typedef xSemaphoreHandle sys_mutex_t;
#define sys_mutex_valid(mutex)			(((mutex) != NULL) && (*(mutex) != NULL))
#define sys_mutex_set_invalid(mutex)	do { if((mutex) != NULL) { *(mutex) = NULL; }}while(0)
#endif

typedef xQueueHandle sys_mbox_t;
#define sys_mbox_valid(mbox) 			(((mbox) != NULL) && (*(mbox) != NULL))
#define sys_mbox_set_invalid(mbox)		do { if((mbox) != NULL) { *(mbox) = NULL; }}while(0)

typedef xTaskHandle sys_thread_t;

#else
#error "unsupported OS"
#endif /* Other OS Case */
#else /* ENABLE_OS */

#endif /* NO OS */

#endif /* LWIP_ARCH_SYS_ARCH_H */

